js-toml is vulnerable to Prototype Pollution

{
  "id": "efe3ec6591915e6a2fd544e0ff316fccd9162f8833916d3b064b9cda5ebc400c",
  "url": "https://osv.dev/vulnerability/CVE-2025-54803",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "js-toml is vulnerable to Prototype Pollution",
    "summary": "js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. In versions below 1.0.2, a prototype pollution vulnerability in js-toml allows a remote attacker to add or modify properties of the global Object.prototype by parsing a maliciously crafted TOML input. This is fixed in version 1.0.2.",
    "evidence": "osv:CVE-2025-54803",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-54803",
      "aliases": [
        "CVE-2025-54803",
        "GHSA-65fc-cr5f-v7r2"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sunnyadn/js-toml",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0052f1158c0e6b5dd935e280aff98937a0a5c3e8"
                },
                {
                  "fixed": "b125910a3f094b744c9c3571360d4b9e3a472f66"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:sunnyadn:js-toml:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b125910a3f094b744c9c3571360d4b9e3a472f66"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.0.1",
            "v1.0.0",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54803.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.838623529Z",
      "provider": "osv",
      "references": [
        "https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54803.json",
        "https://github.com/sunnyadn/js-toml/security/advisories/GHSA-65fc-cr5f-v7r2",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-54803",
        "https://github.com/sunnyadn/js-toml/commit/b125910a3f094b744c9c3571360d4b9e3a472f66"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1321"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54803.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-54803",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499911,
  "published_at": "2025-08-05T00:06:15.916+00:00"
}